A sealed battery for the KH400
It was time for a new battery and sealed batteries are nice because there’s no acid to leak out onto your exhaust pipes, chain, swingarm etc. The KH400 has an odd sized battery, only 2.5 inches wide. It’s hard to find a replacement. Motobatt came to the rescue. Their MB5.5U fits perfectly and it has these cool universal terminals. You can attach the battery cables from the side or from the top. It came in handy on this bike, I attached the ground cable from the front and the positive cable from the top. Piece of cake, took about 10 minutes and this battery is stronger than a brand new lead-acid battery!
The price was $68 including shipping on e-bay.
Kawasaki’s H2 has the same battery size as the KH400, HOWEVER - H2’s tend to overcharge their batteries and installing a sealed battery with a stock H2 regulator may result in a ruined battery. So it’s best to stick to a stock unsealed battery for an H2 unless you’ve upgraded to a better regulator.
Here’s where to buy a better H2 voltage regulator: Lakeland Services
And note with this voltage regulator, you don’t even need a battery! However your bike will have no juice until the motor is running.
By the way this same size battery should fit the RZ350 too. It will also work for the RD400 with some space leftover. You can keep the battery from moving around in the RD400’s battery box by putting some rubber or foam blocks. Even folded up cardboard will work.
I’m ready to ride the KH400 around Honolulu again!